Fair Value Measurements - Summary of Carrying Amount and Fair Values of Financial Instruments Reported on the Balance Sheets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Balance sheet assets
Securities available for sale	$ 1,161,514	$ 1,135,317
Securities held-to-maturity	179,235	181,166
Carrying Amount
Balance sheet assets
Securities held-to-maturity	178,932	181,166
Other investments	41,703	38,044
Loans held for sale	8,430	5,570
Loans, net	5,365,330	5,271,049
State tax credits held for sale	39,521	36,802
Balance sheet liabilities
Certificates of deposit	765,904	826,447
Subordinated debentures and notes	141,336	141,258
FHLB advances	222,000	222,406
Other borrowings	205,918	265,172
Estimated fair value
Balance sheet assets
Securities held-to-maturity	178,081	181,939
Other investments	41,703	38,044
Loans held for sale	8,430	5,570
Loans, net	5,255,133	5,205,651
State tax credits held for sale	44,539	39,046
Balance sheet liabilities
Certificates of deposit	772,208	825,203
Subordinated debentures and notes	127,064	130,985
FHLB advances	223,074	221,402
Other borrowings	$ 205,894	$ 265,172

Loans And Leases Receivable Net Reported Amount Fair Value Disclosure

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Other Borrowings Fair Value Disclosure

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State Tax Credits Held For Sale, Fair Value Disclosure

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Fair value portion of investments accounted under the cost method.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

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Amount of investment in debt security measured at amortized cost (held-to-maturity).

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Fair value portion of mortgage loans held-for-sale.

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